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## what determines the brightness of light wave

### what determines the brightness of light wave

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We can reasonably model a 75 W incandescent light bulb as a sphere 6.0 cm in diameter. This means the light waves that make up violets, indigo and blue have higher energy levels than the yellow, orange and red. You can also fine-tune the brightness of the display, to compensate for a very bright window, for instance. Color of the light ii. Brightness is purely due to the amount of photons entering your eye. As a light wave's length increases, its energy decreases. This feature improves visibility of the display. Photoelectric effect. Typically, the higher the wattage, the higher the lumens, and the more light output. science. Pay close attention to lumens, since this number indicates the brightness, or light output, of the bulb. Simply take your current incandescent watts and select the corresponding LED bulb equivalent on the lumens brightness scale. Red light has less energy than blue light because its wavelength is longer. Bohr model radii (derivation using physics) However, this phenomenon can be explained by the particle nature of light, in which light can be visualized as a stream of particles of electromagnetic energy. The photoelectric effect cannot be explained by considering light as a wave. To save the most energy, choose the … The length of the light wave determines hue or color. i. This is the currently selected item. Energy of the light Light: Electromagnetic waves, the electromagnetic spectrum and photons. What does the intensity or amplitude of a light wave determine? Each photon has a specific amount of energy that is determined by its wavelength or frequency. Bohr's model of hydrogen. Refer to this diagram: In very simple terms it’s how intense it oscillates ‘up and down’. The visible spectrum is the portion of the larger electromagnetic spectrum that we can see. Brightness, in physics, the subjective visual sensation related to the intensity of light emanating from a surface or from a point source (see luminous Spectroscopy: Interaction of light and matter. A lumen measures the amount of light that comes from a bulb, also known as light bulb brightness. Higher energy light isn't brighter though. b) In the photon picture of light, what determines the following properties? The colors perceived of objects are the results of interactions between the various frequencies of visible light waves and the atoms of the materials that objects are made of. i. How high the peaks are determines what we perceive as the brightness of light. A beam of light hits a sheet of metal. Introduction to light. (a) What is the . Brightness/intensity of the light iii. a) In the wave picture of light, what determines the following properties? A standard 40W bulb is equal to 400+ lumens, which represents the brightness of a bulb. Photoelectric effect. Color of the light ii. The frequency and wavelength determine the colour and energy of light and EMR, the word you need to describe brightness is amplitude. Energy of the light. It determines saturation. LIGHT WAVES. Typically, only about 5% of the energy goes to visible light; the rest goes largely to non-visible light infrared radiation. It brightens when there's lots of light, then dims so it's less intrusive when the room darkens. As shows, the electromagnetic spectrum encompasses all of the electromagnetic radiation that occurs in our environment and includes gamma rays, x-rays, ultraviolet light, visible light, infrared light, microwaves, and radio waves. The Wave® radio display automatically adjusts to the light conditions in the room. What does purity or the number of distinct wavelengths determine? Brightness/intensity of the light iii. Many objects contain atoms capable of either selectively absorbing, reflecting or transmitting one or more frequencies of light. 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